Buttonhole-machine.



'No'. 723,460. PATENTED MAR. 24, 1903. J. GUTMANN.

BUTTONHOIQB MACHINE. APPLICATION FILED AUG. 14, 1897.

5 SHBBTS-SHBET 1.

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PA'BYENTED MAR. "24, 1903.

J. GUTMANN. BUTTONHOLE MACHINE.

APPLICATION FILED AUG. 14. 1897.

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30 MODEL.

iwl W No. 723,460. PATENTL D MAR. 24, 1903.

J. GUTMANN.

BUTTONHOLE MACHINE.

APPLICATION FILED AUG. 14, 1897.

no MODEL. v

5 SHEETS-SHEET a.

'PATENTED MAR. 24, 1903.

J. GUTMANN- BUTTONHOLE MAGHINE. APPLICATION FILED AUGJM. 1 89'Z,

5 SH EETQfSHEET 4.

N0 MODEL.

PATBNTED MAR. 24, 1903.

J. ,GUTMANN. BUTTONHOLE MACHINE.

APPLmAnoN FILED AUG. 14, 1897.

SSEEETS-SHEET 5 N0 MODEL.

MN I 2'6 Jinan-es:

UNITED STATES PATENT Ormcn.

JULIUS GUTMANN, O'F BERLIN, GERMANY, ASSIGN QR TO THE FIRM OF' FABRIK FUR SPEZIALNlil-IMASCHINEN A. G.,(PATENTE JULIUS GUT- MANN,) OF ZURICH, SWITZERLAND.

BUTTONHOLE-MACHINE.

SPECIFICATION forming part of Letters Patent No. 723,460, dated March 24, 1903.

Application filed August 14,

' To all whom it may concern.-

Be it known; that-I, JULIUS GUTMANN, a subject of the Emperor of Germany, residing at Berlin, Germany, have invented certain new and useful Improvements in ButtonholeMachines, (for which Letters Patent have been, obtained in Germany, numbered 92,150, and dated October 18, 1896; in France, No.

253,443, (addition,) dated December 12, 1896;-

in Belgium, No. 125,495, dated December 16, 1896, and in Switzerland, No. 13,400, dated December 2 L, 1896;) and'I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters and figures of reference marked thereon, which form a part of this specification.

This invention has relation to that type of buttonhole sewing machines organized to bind both edges of-a buttonhole and to bar both its ends'by stitches laid parallel or substantially parallel to the major axis of the buttonhole, as shown and described in Letters Patent of the United States granted to me under date of November 29, 1898, No.

In a machine organized as shown and described in the patent referred to the bindingstitches are produced by stitch'forming appliances comprising a needle-bar having a vertical reciprocating and a vibrating motion across the buttonhole, a feed motion lengthwise of the buttonhole being simultaneously imparted to the work-holder, and the barringstitches'are formed by vertical rcciprocations of the needle-bar and by short reciprocatious lengthwise of the bntlouhole and a feed motion crosswise of the buttonhole imparted to the work-holder.

This invention has for its object to simplify the construction of machines organized as briefly outlined, and this I attain, first, by dispensing with the mechanism for vibrating the needle-bar crosswise of the l'mttonhole in the formation of the bimling-stitches and sub- 1897. BerinlNo.648,320. (Nomodel-l quired short reeiprocations crosswise of such bn'ttonhole; secondly, by simplifying the appliances for periodically throwing the feed mechanism just referred to into and out of operation; thirdly, by combining with the mechanism for imparting to the Work-holder the aforesaid short reciprocations crosswise of the buttonhole in binding an edge thereof mechanism for imparting to said work-holder its feed motion crosswise of the buttonhole in barring an end thereof and in simplifying the. appliances for throwing said mechanisms into and out of operation, and, lastly, in simplifying the appliances for throwing into and out of operation the mechanism for imparting to the work-holder its short reciprocat-ions lengthwise of the buttonhole in barring an end thereof.

That my invention may be fully under stood I will describe the same in detail, reference being had to the accompanying drawings, in which Figure l is a side elevation; Figs. 2 and 2, sectional plan views, the bed plate being broken away in Fig. '2; and Fig. 3 is an under side view of a buttonhole-sewing machine organized in accordance with this invention. Fig. 4 is a section on line scan of Fig. 3. Fig. 4 is a sectional detail view of the devices for periodically coupling the work-holder to the vibrating lever, which imparts to said workholder reciprocating motion lengthwise of the buttonhole; andFigs. 5 and 6 are stitch diagrams. a

In view of the fact that any well-known and suitably-organized stitch-forming appliances comprising a needle-bar tllldlllfittllS for imparting to it a vertical reciprocating motion only maybe used I deem it unnecessary either to illustrate or describe such in detail.

In Fig. 1 it is supposed that the needle-bar I3" is rcciprocated vertically by suitable connection with the upper or main drivingshaft.

The work-holder H', Figs. 1 and 2, is of substantially the same constructionas that shown in my patent above referred to, it being composed of a lower clamping-jaw or work-plate S, provided withthe shank or extension S,

, having at its end a slotted plate d, throng the medium of which the short lecim'nnatinnm Y Inn wise of the buttonhole above referred to may be imparted to the work-holder to form the binding-stitches in conjunction with stitchforming appliances comprising a needle-barhaving avertical reciprocating motion only, I provide a slide S, adapted to reciprocate crosswise of the bed-plate Gin suitable guides S to which slide the work-plate S is so con nected as to reciprocate therewith and to have independent motion lengthwise of said bedplate.

The construction of the feed-wheel A differs somewhat from that shown in my said patent; but the mechanism which imparts to said feed-wheelits progressive rotation is substantially the same as that shown in said patcut, a indicating the actuating-pawl, L the rock-lever, Z the link connecting said pawl and lever, and f the sleeve provided with a cam-groove ff, that rocks or vibrates said levar L, said sleeve being shown as carried by the auxiliary shaft w shown in my said patent geared to the main driving-shaft, but may eral shoulders a be and in practice is carried by said main driving-shaft, thus dispensing with shaft to The feed-wheel A has on its under faceadiscoidal boss A and on its upper face a like.

boss A both of less diameter than the intermediate ratchet-toothed portion or feed-wheelproper. The boss A has atdiametricallyopposite points peripheral projections a, and the boss A is of a differential diameter-that is, one-half or substantially one-half of said boss is of greater diameter than the other to format diametrically opposite point-s periph- On the upper face of boss A at diametrically opposite points is secured or formed a ledge or projection a the ends of which are inclined, and in said 'face is formed a suitable cam-groove a, having the eccentric portions 1 and 2 merging into the intermediate concentric portions 1 and II, respectively, substantially as shown and described in the aforementioned patent. The relative arrangement of the projections a on boss A, the shoulders a projections (1 and cam-groove a on and in boss A is such'to cause the actuating'mechanism to properly perform its functionsin hindingthecdges and barring the ends ot a buttonhole, as hereinafter explained.

The eccentric portions 1 and 2 of the camgroove a impart to the work-holder II its progrcssive feed motion lengthwise of the bedplate and bnttonhole in one or the other direction, according as the eccentric portion 1 or 2 is acting on the feed-transmitting appliances, and, as hcreinbeiore stated, the Workholder during these feed motions is reciproconnecting-bar 0.

cated crosswise of said bed-plate to form the binding-stitches by mechanism hereinafter described. These feed-transmitting appli' ances are organized substantially as shown and described in my said'pate'nt and consist,- as shown in Figs. 1, 2", and 3, of a feed-trans mitting bell-crank lever b fulcrumed to astud 7 on the under side of bed-plate G and having a pin b, carrying a roller that projects into the aforementionedcam-groove a v in boss. A of feed-wheel A. The lever b' is connected with anadjusting-leverl', likewise fulcrumed to-the under side of the bed-plate G by means'o'f the ;pin 1 -015 a clamping device Z said pin passing. through a curved slot in said lever Z andthrough' lever b and whereby the amplitude of the movement of v said lever in one or the other direction un: der the actionof-the eccentric portions l-or 2 of the cam-groove a maybe varied in a well known mannerin accordance with the length of the buttonhole, to be worked. V i

In the operation of the machine and, as hereinafter referred to, after one edge of a bnttonhole is bound and before one end thereofcan'be barred thework-ho'lder slide S must be uncoupled from the feed-lever 6 in order that a progressivefeed motion crosswise of the buttonhole and a reciprocating v mdtion lengthwise of the buttonhole may be imparted to said work-holder-to form the barring-stitches. The mechanism for periodically coupling the feed-lever 11 to and uncoupling the same from the work-plate S is, with one exception, hereinafter referred to, the same as the corresponding mechanism shown and described in my patent herein mentioned and maybe briefly described, reference being had to Figs. 1, 2*,and 3. To

the adjusting-lever Z is secured a pint), that projects through the slot 8 in feed-lever b and into a hole of a connecting-bar c, adapted to be coupled to and uncoupled from a bar plate S by a pin 0 by means of a headed coupling-pin a, working in a hole in bar 0 and adapted to he projected-into a hole in The coupling-pin c is secured toorengaged by the free end of a spring 0 whose opposite end is secured to the under side of bar c The powerof the spring on pin 0 is exerted in adownward direction to draw said pin out of engagement with bar 0 and is held in such engagement by a bar or' plate 0 bearing on the head of the pin and having a foot 0 guided in a suitable bracket 0 and held up by the forward arm of a two-armed lever c and connected to the foot of plate 0 by a pin c projecting into a hole in the downwardly-bent end of said for-- tioned patent I make use of two lovers, one

actuated the projections a on feed-wheel entarrangement,thisbeing the onlydiiference between the two mechanisms. Of course in the present arrangement the roller of lever 0 must be held to the upper face of feedwheel boss A as otherwise the power of the spring 0* on bar or plate 0 would tend to tilt said lever 0 and hold its roller out of reach of the projections a on said boss. This may he done by any suitable means. A simple d very common expedient would be a spring ing oneend secured to bracket c, Fig. 1, is hearing with its free end on the rollerof lever 0 This is an expedient so simpie and common and no claim being made ete thatI have deemed it unnecessary to ustr'ate the same. It will be obvious that an a projection a on feed-wheel boss lifts roller-arm of lever c the forward arm of will be depressed, thereby drawing *n the bar or plate 0 enabling the spring 0 to move the coupling-pin 0 down out of engagement with the connecting-bar a, thereby, uncoupling feed-lever If from bar 0 and consequently from work-plate S. As soon, however, as a projection a moves from under roller (2 the forward arm of lever is raised, and thereby the lock-plate 0 which latter, acting on the head of couplingpin 0, moves the same against the stress of its spring c into engagement with connectingbar-c, thereby coupling feed-lever'b with bar 0 and consequently with the work-plate S, as will be readily understood.

The short reciprocations lengthwise of the bed-plate, arrow 6, Fig. 2, are imparted to the .workholder H by appliances substantially such asdeserioed'in my patent hereinbefore referred to througha two-armed rocklever F, fulcrumed at f to a standard rising from bed-plate G andvibrated by a camgrooved sleeve f, carried, as shown, by the auxiliary shaft w but which in practice is carried by the main driving-shaft and acts on a roller at the free end of the upper arm f of lever F. The lower arm f of lever .F is connected by a link f with a rock-leverf, fulcrumed at e to bed-plate G, Fig. 2, said lever having a longitudinal slotf", Fig. 4", adapted to register with a transverse slot 01 in plate d, secured to the end of the extension S of the work-plate S of work-holderll, hereinbefore referred to. The plate (1 has also a rectangular opening 17 of the same length as slot (1 but considerably wider, and has adj ustably seen red thereto a plate (1 having a recess in its under face, "3 of the same length and width as the alert ud slot (1.

This plate is, as shown in Fig. 2, Tfliaped, its transverse member being slotted ongitudt nally for the passage of the set-scrcw 18, by means of which said plate is adjusted along the opening 17 for purposes presently explained. In. the bed-plate G and projecting slightly from its upper face is secured a sleeve 6 Figs. 2, 4, in which is guided a coupling-pin e, held in contact with the face of boss A of feed-wheel A by a spring .9 secured, respectively, to an arm 27, projecting from the pin through a vertical slot in the sleeve, and to an arm 28, projecting from said sleeve, Fig. 4. The lower crank-arm of pin e lies in the path of the projections a on aforesaid boss A and is adapted to pass through slot f in rock-lever f and either the slot d in plated or into the recess in the under face of the-adjustable plate d according as one or the other "end of a buttonhole is being barred, and by means of said plate 01 the coupling of the coupling-pin c with the rock-lever f and with the work-holder through slot (1 or plate (1 may be effected in accordance with the length of the buttonhole to be bound and barred.

The arrangement of these appliances is such that when one or the other concentric portion I or II of the cam-groove a in boss A of feedwheel A is moving along the roller of pin b of Y feed-lever b? the latter remains stationary, and at the same time a projection a) on said boss moves under the roller e on lever 0 tilting the latter and depressing the lock-plate c and allowing spring 0 to move coupling-pin 0 out of engagement with link a and bar cto' uncouple the work-holder H from the feedlever b, as abovedescrib'ed. Simultaneously therewith the other projection a. on the aforesaid boss A of feed-wheel Ainoves under the coupling-pin e and couples the work-holder to the rock-lever)", as and for the purposes hereinbefore set forth. By so arranging the -eoupling-lever e and uncoupling-pin e as to be simultaneously acted upon by the aforesaid projections a the mechanism performing the described functions is materially sim- The short reciprocations crosswise of the plate in one or the other direction, necessary to the formation of the barring-stitches, are imparted to the work-holder H through the followinginstrnmentalities: Thework-holder slideS', Fig. 2, has a ing to which is secured a pin 5'', that projects through a slot 29 (also shown in Fig. 3) in bed-plate G into a longitudinal slot 30, Fig. 3, in arm 0 of a twoarmed rock-lever C, the other arm, of which carries a roller 0 held' in engagement with the undulating teeth I) of a wheel B by a spring 5 secured to arm 0 of said lever and to a stud on bed-plate G, respectively, Figs. 2' and 3. The wheel B is mounted'on a spindle, which has its bearing in a slide 13 guided in a guide-plate g, secured to the under side of bed-plate G, Figs. 1, 2, and 4;. The slide B has acrank-arm I), provided with a pin carrying a roller b held in contact with guided in a lug on bed-plate G. .The wheel.

B has formed onor secured to itsupper face a ratchet-wheel B, actuated by a pawl 17, held in engagement with said ratchet-wheel by a spring f, said pawl beingcon'nected with and reciprocated by an arm'b of a twoarmed rock-lever B the arm b of which has a pin b that carries a roller which projects into a cam-groove in a sleeve w, secured to the lower machine-shaft 10. It is obvious that the progressive rotation of the ratchetwheel B is imparted to the wheel B and the latter vibrates the leverC, whose vibrations are transmitted to the slide S of work-holder H through pin 3, thereby imparting to said work-holder the short reciprocations necessary to the formation of the binding-stitches. Inasmuch as the lever C is in perpetual engagement with wheel B and as the latter is carried by and has motion with the feed-slide B the movements of the latter are transmitted to the work-holder slide S and therethrough to the work-holder. -Since the roller on pin b of slide B is held in contact by the slide-springf with the periphery of the boss A on feed-wheel A, whenever during the rotation of the latter a shoulder a on said periphery of boss A acts upon said roller the feed-slide B is progressively moved crosswise of the bed-plate in one or the other direction, either by such shoulder or by the feed-slide spring f, according as said roller rides along a shoulder at from the part of smaller diameter onto the part of greater diameter of said boss A or vice versa, and whereby the feed motion crosswise of the bed-plate in one or the other direction necessary to the formation of the barring-stitches is imparted to the work-holder H.

"In barring a buttonhole end it is of course necessary to throw out of operation mechanism-which actuates the wheel B, that vibrates the lever C. This is effected by a bellcrank lever D, Figs. 2 and 3, fulcrumed at cl to the under side of bed-plate G. The arm d of said lever has bearing on the pawl b, that actuates the ratchet B, and the arm d of the lever has a pin (Z carrying a roller held by said pawl through itsspring f against the periphery of the boss A on the under face of feed-wheel A, so that when during its rotation a shoulder a on said boss passes along said roller on pin on arm (1- of lever D the latter is tilted, causing its arln d to move.

paw] b away from or out of engagement with the ratchet-wheel B. l

Referring to Figs. 1, 2, and 3, in working a buttonhole the work-holder receives, 'for instance, its feed motion in the direction of arrow 1, Fig. 2, from feed-lever 11. actuated by the eccentric portion 20f cam-groove a in feed-wheel A and through the described con nections connecting said lever with the extension S of said work-holder. "Simultaneously therewith a reciprocating motion in the direction of double-headed arrow 5, Fig. 2, is imparted to the work-holder through the wheel B, actuated as described, and the lever 0, connected with slide S of said worinholder, to form, in conjunction with the stitch-forming appliances, the binding-stitches and bind one edge of a buttonhole. As soon as the roller on pin 11? of feed-lever b passes into the concentric portion 11 of the aforesaid camgroove the feed-lever 5 remains stationary and is uncoupled from the extension 3 of the work-holder H by a projection a on-the face of boss A of feed-wheel A acting on roller e of ward to enable the uncoupling-spring c to move the coupling-pin 0 out of engagement with the link 0 and bar 0 Simultaneously therewith the other projection a on the face of the aforesaid boss of feed-wheel A moves under the coupling-pin e, lifts the same through the slot f in rock-lever f into the recess in the under side of the adjustable plate (1 on plate d of extension S of work-holder H to impart to it the short reciprocations in the direction of the double-headed arrow 6, Fig. 2. At the same time a projection a on boss A of feed-Wheel A acts on the roller on pin d of gage the pawl b from ratchet-wheel B, thereby stopping the rotation of wheel B, the vicrosswise of the bed-plate of slide S and work-holder H. Simultaneously therewith a shoulder a on the periphery of the boss A of feed-wheel A acts upon the roller on pin 19 of slide B said roller moving from the part 01": smaller diameter onto the part of greater diameter of said boss, during'which movement the said slide B receives its progressive motion in the direction of arrow 3, Fig. 2, whereby the barring -stitehes are formed and one end of the buttonhole is barred. When the roller on pin 1) of feed lever 12 passes from the concentric portion II into the eccentric portion 1 of aforesaid cam-groove a, the direction of feed of the work-holder H is reversednamely, in the direction of arrow 2'and simultaneously therewith said work-holder is uncoupled from the rock-lever f in that the projection a on boss'A of feed-wheel A, which had previously moved the couplingpin 6 into engagement with rock-lever fand adjustable plate (1 of slotted plate d on extension 8* of work-holder H, moves from undersaid coup- 1ing-pin e, allowing the spring '8 Fig: 4;, to draw said pin'd'own and out of engagement with rock-leverfand plate d. At the same time theother projection a on the aforesaid boss A on feed-wheel A moves from under the roller 0 of lever 0 allowing its spring to depress it and lift the lock-plate c and therethrough the coupling-pin 0' against the stress of its spring 0 into engagement with the linkcv and bar again, thereby coupling feedlever l) with the work-holder. Simultaneously with these operations the roller on pin 11 of slide B has passed along a shoulder a on boss A of feed-wheel A from the part of brat/ions of lever G, and the reciprocationv lever 0 the latter moving lock plate 0 downbell-crank lever D, causing the latter to disen smaller diameter to the part of greater diameter, thereby stopping the feed motion of slide B crosswise of the bed-plate. At the same time the projection a on boss A of feedwheel A moves clear of the roller on pin (1 of arm 01 of bell-crank lever D, permitting the pawl-spring f to move pawl b again into engagement with ratchet-wheel B to impart to the work-holder H the short reeiprocations crosswise of the bed-plate through the medium of the wheel B, lever C, and workholder slide S, thus placing the mechanism again in condition for binding, and as the feed motion of the work-holder is now reversed the second edge of the buttonhole will be bound. At the completion of this operation and as the roller on pin 1) of feed-lever Z2 enters the concentric portion I of thecamgroove a in boss A of feed-wheel A the mechanism is again placed in condition for barring, as above set forth; but now the roller on pin carried by feed-slideB moves along a shoulder a on the aforesaid boss A from the part of greater diameter to the part of least diameter of said boss, the progressive or feed motion crosswise of the bed-plate being now imparted to said feed-slide by its spring f in a reverse direction, arrow 4, Fig. 2, to bar the other end of the buttonhole. It will thus be seen that the binding and barring operations take place alternately, so that one edge of a buttonhole can be bound and one end barred, then the otheredge bound, and finally the opposite end barred.

Having thus described my invention, what I claim as new therein, and desire to secure by Letters Patent, is

1. In a buttonholesewing machine, the combination with the work-holder, a progres sively-rotating feed wheel having a camgroove ct in, and projections a on its upper face, stitcl1-forming appliances comprising a vertically-reciproeating needle-liar, a feed-j lever detachably connected withthe workholder and acted upon by the aforesaid canigroove to feed the work-holder lengthwise lot the bed-plate, a rock-lever connected withsaid work-holder to recipi 'ocate the same crosswise of the bed-plate, a progressive vrevolving toothed wheel rocking {said levir, said wheel also having motion niossw'i'sejnf the bed-plate, and means for preventii'g, such motion while said wheel vibrates thri r o ,l lever, for the purpose set forth,

2. In a buttonhole-sewing machine, the combination with the work-holder,comprising a work-plate and a slide connected therewith to move it crosswise of the bed-plate and to allow said work-plate to move independently lengthwise of said bed-plate, stitchforming appliances comprising a verticallyreciproeating needle-bar, a progressively-revolving feed-wheel having a cam-groove a in, and projections a on its upper face,\a feedlever acted upon by said cam-groove to feed the work-holder lengthwise of the bed-plate, said lever detachably connected with said bed-plate; L with the work-holder and reciprocating the work-holder, and mechanism for reciprocat ing the aforesaid slide comprisinga rock-lever and a progressively-revoluble toothed wheel B, said wheel also having motion crosswise of the bed-plate; of the rock-lever fconnectible with the work-holder and reciprocating the same lengthwise of the bed-plate, a ver- 3. In "a buttonhole-sewing machine, the

combination with the work-holder, comprising a work-plate and a slide connected therewith to move it crosswise of the bed-plate and to allow said work-plate to move independently lengthwise of said bed-plate,stitchforming appliances comprising a'verticallyreciprocating needle-bar, a progressively-revolving feed-wheel having a cam-grooved, in, and projections a on the upper face of a boss A on said 'feed-wheel A, said boss having peripheral shoulders a a feed-lever acted upon by said cam-groove to feed the workholder lengthwise of the bed-plate, said lever detachably connected with said work-holder,

and mechanism for reciprocating the aforesaid slide, comprising a rock-lever and a progressively-revoluble toothed wheel B, said wheel also having motion crosswise of the of the rock-lever f conneetible same lengthwise of the bed-plate, a vertically-movable coupling-pin 6 arranged to be projected through a slot in said lever into engagement with the work-holder, said pin in the path of the projections a on the feed wheel, means acted upon by one of said pro-. jections to disconnect the feed-lever from the work-holder when the other projection acts upon the cou pling-pin efland means forsimultaneously stopping the progressive rotation of the wheel l3 and for imparting to said wheel feed motion crosswise of the bed-plate, comprising a spring-actuated slide carrying wheel 13, said slide provided with. an arm carryinga roller acted on by oncof the aforesaid shoulders a on boss A of the feed-wheel, for the purpose set forth.

4. In a bnttonhole-sewing machine, the combination with stitch-forming appliances comprising a vertically-reeiproeating needlebar, the work-holder comprising a work-plate and a slide S connected to move together crosswise of the bed-plate of the machine and to allow the work-plate to move independently lengthwise of said bed-plate, a food-wheel having a cam-groove (L in its upper face and peripheral projections a on a boss on its lower face, a feed-lever detachahly connected with the work-holder and acted upon by said cam-groove a to feed said work-holder lengthwise of the bed-plate, a rock-lever connected with the slide S, a toothed wheel B in perpetual engagement with said lever, a ratchet-wheel on said toothed wheel, a pawl, and a vibrating lever connected with said pawl; of means for disconnecting -the feed-lever from the workholder and simultaneously therewith imparting to said work-holder a reciprocating motion lengthwise of the bed-plate, means for bar, the lower machine-shaft, the work-holder com prising a work-plate and slide S con nected to movetogether crosswise of the bed-plate of the machine and to allow the work-plate to move independentlylengthwise of said bedplate, a progressively-revolving feed-wheel having a boss A on its upper face provided with peripheral shoulders a with a camgroove a in, and with projections a on its upper face,said cam-groove having eccentric portions 1 and 2 and concentric portions I and H,

a feed-lever detachably connected with the work-holder and acted upon byan eccentric part of the cam-groove a to feed the workholder lengthwise of the bed-plate in one direction, a toothed wheel 13, and mechanism for revolving the same, operated by the lower machine-shaft, a rock-lever in perpetual engagement with said wheel and connected with the aforesaid slide S to reciprocate the same crosswise of the bed-plate; of means automaticallydisconnecting the feed-lever from the W0rk-holder when said lever ceases to be acted upon by an eccentric portion of the aforesaid cam-groove, appliances for reciprocating the work-holder lengthwise of the bed-plate, means automatically coupling said work-holder with said appliances when said work-holder is disconnected from the aforesaid feed-lever, means for simultaneously stopping the rotation of the aforesaid wheel B, and means feeding the same crosswise of the machine bed-plate, consisting of a slide B carrying the wheel B, and provided with an arm carrying a roller, and a spring acting on the slide to hold said roller to the periphery of the boss A on the feed-wheel for the action thereon of a shoulder a whereby and by a complete revolution of the feed-wheel the work-holder is reciprocated crosswise of the bed-plate and fed lengthwise thereof to bind one edge of a bu ttonhole, said movements then stopped and the work-holder reciprocated lengthwise of the bed-plate and fed crosswise thereof to bar one edge of said buttonhole, these operations being successively repeated to bind the opposite edge and bar the opposite end of such buttonhole, the direction of feed in the last two operations being reversed, substantially as described.-

In testimony that I claim the foregoing as my invention I liave signed my name in presence of two subscribing witnesses.

JULIUS GUTMANN. 

